Takahashi K, Kaneko T, Hatakeyama R
Department of Electronic Engineering, Tohoku University, Sendai 980-8579, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Jul;74(1 Pt 2):016405. doi: 10.1103/PhysRevE.74.016405. Epub 2006 Jul 28.
Propagation and absorption of electromagnetic waves with electron cyclotron resonance (ECR) frequency are investigated for the case of inhomogeneously magnetized plasmas, when the left-hand polarized wave (LHPW) is selectively launched. The LHPW with axisymmetric-azimuthal and second-order radial modes is absorbed near the ECR point at any radial position, which is caused by the polarization reversal to the right-hand polarized wave. On the other hand, it is clarified that the LHPW with fundamental radial mode penetrates the ECR point without polarization reversal. In addition, it is theoretically suggested that polarization reversal can partially occur in the plasma column for the case of nonaxisymmetric modes.
研究了在非均匀磁化等离子体情况下，当选择性发射左旋极化波（LHPW）时，具有电子回旋共振（ECR）频率的电磁波的传播和吸收。具有轴对称方位角和二阶径向模式的LHPW在任何径向位置的ECR点附近被吸收，这是由极化反转到右旋极化波引起的。另一方面，明确了具有基模径向模式的LHPW可以穿透ECR点而不发生极化反转。此外，从理论上表明，对于非轴对称模式的情况，极化反转可以在等离子体柱中部分发生。
